ForgottenWawiTech/Content/Projectiles/Transcendent/TranscendentRailBolt.cs

using Microsoft.Xna.Framework;
using System;
using Terraria;
using Terraria.Audio;
using Terraria.ID;
using Terraria.ModLoader;

namespace ForgottenWawiTech.Content.Projectiles.Transcendent
{
    public class TranscendentRailBolt : ModProjectile
    {
        public override void SetStaticDefaults()
        {
            ProjectileID.Sets.TrailCacheLength[Type] = 15;
            ProjectileID.Sets.TrailingMode[Type] = 3;
        }

        public override void SetDefaults()
        {
            Projectile.width = 14;
            Projectile.height = 14;
            Projectile.friendly = true;
            Projectile.hostile = false;
            Projectile.penetrate = 8;
            Projectile.timeLeft = 240;
            Projectile.tileCollide = false;
            Projectile.extraUpdates = 3;
            Projectile.DamageType = DamageClass.Ranged;
            Projectile.ignoreWater = true;
            Projectile.light = 0.6f;
        }

        public override void AI()
        {
            if (Projectile.localAI[0] == 0f)
            {
                Projectile.localAI[0] = 1f;
                SoundEngine.PlaySound(SoundID.Item72, Projectile.position);
            }

            Lighting.AddLight(Projectile.Center, 0.5f, 0.55f, 0.8f);
            Projectile.rotation = Projectile.velocity.ToRotation();

            if (Main.rand.NextBool(3))
            {
                Vector2 dustVelocity = Projectile.velocity * 0.2f;
                Dust dust = Dust.NewDustDirect(Projectile.position, Projectile.width, Projectile.height, DustID.Electric, dustVelocity.X, dustVelocity.Y, 150, default, 1.2f);
                dust.noGravity = true;
            }
        }

        public override void OnHitNPC(NPC target, NPC.HitInfo hit, int damageDone)
        {
            SplitIntoShards();
        }

        public override void OnKill(int timeLeft)
        {
            SplitIntoShards();
            for (int i = 0; i < 8; i++)
            {
                Dust dust = Dust.NewDustDirect(Projectile.position, Projectile.width, Projectile.height, DustID.BlueCrystalShard, Projectile.velocity.X * 0.4f, Projectile.velocity.Y * 0.4f, 100, default, 1.3f);
                dust.noGravity = true;
            }
        }

        private void SplitIntoShards()
        {
            if (Projectile.owner != Main.myPlayer)
                return;

            int shardCount = 3;
            for (int i = 0; i < shardCount; i++)
            {
                Vector2 velocity = Projectile.velocity.RotatedByRandom(MathHelper.ToRadians(25f)) * 0.7f;
                if (velocity.LengthSquared() < 1f)
                {
                    velocity = new Vector2(0f, -6f);
                }

                Projectile.NewProjectile(
                    Projectile.GetSource_FromThis(),
                    Projectile.Center,
                    velocity,
                    ModContent.ProjectileType<TranscendentBladeShard>(),
                    (int)(Projectile.damage * 0.7f),
                    Projectile.knockBack * 0.6f,
                    Projectile.owner);
            }
        }
    }
}